Response: In the federal system, Federal Rule of Criminal Procedure 6 says that a knowing violation of grand jury secrecy is punishable as criminal contempt (which is a crime like any other). Those who have violated grand jury secrecy have also been prosecuted for obstruction of justice, in addition to or instead of criminal contempt. (The charge brought usually depends on the circumstances: If, for example, a grand juror leaks details of an investigation to the target of the investigation, this will probably be prosecuted as both criminal contempt, for knowingly violating secrecy, and for obstruction of justice, since the leak was intended to let the target try to avoid prosecution).

Response: The newspaper would probably not be considered as a handler or stolen goods, since the information is not really "property." The newspaper might be considered an aider and abettor of the person who violated grand jury secrecy and/or a party to a conspiracy to violate grand jury secrecy; either of these theories can be used to hold the aider and abettor or the conspirator liable for the other party's substantive offense(s), e.g., criminal contempt and/or obstruction of justice.

I'm not aware of any prosecutions like this, though. This may be because newspapers either haven't been given the opportunity to disseminate illegally revealed grand jury material or, if given such an opportunity, have declined to do so. Also, the newspaper might claim it did not realize the information was illegally disseminated (e.g., that the newspaper believed the information was legally available), and it might be difficult to establish this element, which is essential to charging the newspaper.